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A green liquor dissolution tank exhaust recovery device

An exhaust gas recovery and dissolving tank technology, which is applied in the fields of combined devices, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as alkali dust emission, and achieve the effects of reducing gas emission, reducing the degree of corrosion, and running stably

Active Publication Date: 2015-11-18
CHINA LIGHT IND WUHAN DESIGN ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide a green liquor dissolution tank exhaust recovery device, which can systematically solve the problem of odor and alkali dust discharge in the exhaust gas of the green liquor dissolution tank supporting the combustion products of the alkali recovery furnace

Method used

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  • A green liquor dissolution tank exhaust recovery device

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Effect test

Embodiment 1

[0062] The present invention will be further described according to accompanying drawing:

[0063] A green liquor dissolving tank exhaust recovery device, which includes: green liquor dissolving tank 1, spray water pump 2, cyclone separator 3, mist separator 4, exhaust fan 5, dissolving tank exhaust pipe 6, cyclone Separator exhaust pipe 7, mist separator exhaust pipe 8, induced fan exhaust pipe 9, spray water pump inlet pipe 10, spray water pipe 11, green liquid pipe 12, condensate water 13, temperature sensor 14-1, Pressure transmitter 14-2, PLC control system 15. Its connection relationship is: the green liquid dissolving tank 1 is located on the ground (±0.00m) of the first floor, and the green liquid dissolving tank 1 is provided with a first dissolving tank exhaust port 1-1, a second green liquid outlet 1-2, The third green liquid inlet 1-3, the fourth condensed water inlet 1-4; the front exhaust port 1-1 of the first dissolution tank on the upper part of the green liqu...

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Abstract

The invention discloses an exhausting-recycling device of a green liquid dissolving tank. The exhausting-recycling device is characterized in that a dissolving tank exhausting pipe is connected with a dissolving tank exhausting hole and a cyclone separator air inlet, respectively; a spraying water pump water inlet is connected with a green liquid outlet and a spraying water pump on the green liquid dissolving tank, respectively; a variable frequency motor is connected with the spraying water pump and a frequency converter, respectively; a spraying water pipe is connected with a cyclone separator and the spraying water pump, respectively; a green liquid pipe is connected with a green liquid inlet in the green liquid dissolving tank as well as a green liquid outlet in the cyclone separator; a cyclone separator exhausting pipe is connected with a cyclone separator exhausting pipe outlet and an entrainment separator inlet; a temperature sensor is connected with the cyclone separator exhausting pipe and a temperature display / control unit, respectively; a condensed water pipe is connected with a condensed water inlet and a condensed water outlet, respectively; an entrainment separator exhausting pipe is connected with an entrainment separator exhausting hole and an exhausting induced draft fan, respectively. The exhausting-recycling device has the beneficial effects that the structure is simple, water and energy are saved, harmful gas is effectively recycled, production and operation environments are improved, and the corrosion to a stressed component of a steel structure plant is alleviated.

Description

technical field [0001] The invention relates to the technical field of alkali recovery by pulping waste liquor combustion method in the papermaking industry, and more specifically relates to a green liquor dissolving tank exhaust recovery device, which is suitable for recycling waste gas from the green liquor dissolving tank exhaust. Background technique [0002] The green liquor dissolving tank (or dissolving tank for short) is used to collect the melt (the main components are sodium carbonate and sodium sulfide) produced after the combustion of papermaking waste liquor (black liquor), the melt flows into the dissolving tank, and dissolves into the tank in water or dilute White liquor (dilute lye mainly composed of sodium hydroxide) forms green liquor (mainly composed of water, sodium carbonate and sodium sulfide). In the project where the melt flows into the green liquor dissolution tank, the melt at about 750°C to 970°C is crushed by steam, water or dilute white liquor al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00
Inventor 康仙陵梁斌龚辛段启坤张劲松单晓飞于建仁张嘉周兵王艳霞
Owner CHINA LIGHT IND WUHAN DESIGN ENG CO LTD
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